Molten steel alloying cored wire and method
A cored wire and alloying technology is applied in the field of nitrogen alloying and vanadium in molten steel. Lower, less volatile effects
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Embodiment 1
[0036] The cored wire used for alloying of molten steel includes a core layer composed of a vanadium nitride alloy and a silicon-calcium alloy. The weight ratio of the vanadium nitride alloy to the silicon-calcium alloy is: vanadium nitride alloy: 90%, silicon-calcium alloy: 10%, both vanadium nitride alloy and silicon-calcium alloy are powders, with a particle size of 2mm or less, the core layer is wrapped with a skin made of cold rolled strip steel, and the outer diameter of the entire cored wire At 12mm, the vanadium recovery rate is 96%.
Embodiment 2
[0038] The cored wire used for alloying of molten steel includes a core layer composed of a vanadium nitride alloy and a silicon-calcium alloy. The weight ratio of the vanadium nitride alloy to the silicon-calcium alloy is: vanadium nitride alloy: 65%, silicon-calcium alloy: 35%, both vanadium nitride alloy and silicon-calcium alloy are powders, with a particle size of 3mm or less, the core layer is wrapped with a skin made of cold rolled strip steel, and the outer diameter of the entire cored wire At 12mm, the vanadium recovery rate is 97.8%.
Embodiment 3
[0040] The cored wire used for alloying of molten steel includes a core layer containing vanadium nitride alloy, silicon-calcium alloy and vanadium-iron alloy, and the weight ratio of the above-mentioned vanadium nitride alloy to silicon-calcium alloy and vanadium-iron alloy is: Vanadium nitride alloy: 80%, silicon-calcium alloy: 10%, vanadium-iron alloy: 10%. Vanadium nitride alloy, silicon-calcium alloy and vanadium-iron alloy are all powder materials with a particle size of 3mm or less. The core layer is wrapped with a skin made of cold-rolled strip steel. The outer diameter of the entire cored wire is 13mm. The recovery rate of vanadium is 96.5%.
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